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10287161 = 61916619
BaseRepresentation
bin100111001111…
…100000111001
3201100122022222
4213033200321
510113142121
61004253425
7153303503
oct47174071
921318288
1010287161
115896995
123541275
1321924a1
14151ad73
15d830ab
hex9cf839

10287161 has 4 divisors (see below), whose sum is σ = 10304400. Its totient is φ = 10269924.

The previous prime is 10287157. The next prime is 10287163. The reversal of 10287161 is 16178201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10287161 - 22 = 10287157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10287161.

It is not an unprimeable number, because it can be changed into a prime (10287163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7691 + ... + 8928.

It is an arithmetic number, because the mean of its divisors is an integer number (2576100).

Almost surely, 210287161 is an apocalyptic number.

It is an amenable number.

10287161 is a deficient number, since it is larger than the sum of its proper divisors (17239).

10287161 is an equidigital number, since it uses as much as digits as its factorization.

10287161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17238.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 10287161 is about 3207.3604412351. The cubic root of 10287161 is about 217.4862703272.

The spelling of 10287161 in words is "ten million, two hundred eighty-seven thousand, one hundred sixty-one".

Divisors: 1 619 16619 10287161